Higher-order band topology

B **e, HX Wang, X Zhang, P Zhan, JH Jiang… - Nature Reviews …, 2021‏ - nature.com
A conventional topological insulator (TI) has gapped bulk states but gapless edge states.
The emergence of the gapless edge states is dictated by the bulk topological invariant of the …

Topological photonic crystals: physics, designs, and applications

GJ Tang, XT He, FL Shi, JW Liu… - Laser & Photonics …, 2022‏ - Wiley Online Library
Recent research in topological photonics has not only proposed and realized novel
topological phenomena such as one‐way broadband propagation and robust transport of …

Quantum states and intertwining phases in kagome materials

Y Wang, H Wu, GT McCandless, JY Chan… - Nature Reviews …, 2023‏ - nature.com
Abstracts In solid materials, non-trivial topological states, electron correlations and
magnetism are central ingredients for realizing quantum properties, including …

Topological metamaterials

X Ni, S Yves, A Krasnok, A Alu - Chemical Reviews, 2023‏ - ACS Publications
The topological properties of an object, associated with an integer called the topological
invariant, are global features that cannot change continuously but only through abrupt …

Observation of higher-order non-Hermitian skin effect

X Zhang, Y Tian, JH Jiang, MH Lu, YF Chen - Nature communications, 2021‏ - nature.com
Beyond the scope of Hermitian physics, non-Hermiticity fundamentally changes the
topological band theory, leading to interesting phenomena, eg, non-Hermitian skin effect, as …

Recent advances in 2D, 3D and higher-order topological photonics

M Kim, Z Jacob, J Rho - Light: Science & Applications, 2020‏ - nature.com
Over the past decade, topology has emerged as a major branch in broad areas of physics,
from atomic lattices to condensed matter. In particular, topology has received significant …

Roadmap on structured waves

KY Bliokh, E Karimi, MJ Padgett, MA Alonso… - Journal of …, 2023‏ - iopscience.iop.org
Structured waves are ubiquitous for all areas of wave physics, both classical and quantum,
where the wavefields are inhomogeneous and cannot be approximated by a single plane …

Nonlinear second-order photonic topological insulators

MS Kirsch, Y Zhang, M Kremer, LJ Maczewsky… - Nature Physics, 2021‏ - nature.com
Higher-order topological insulators are a novel topological phase beyond the framework of
conventional bulk–boundary correspondence,. In these peculiar systems, the topologically …

[HTML][HTML] A brief review of topological photonics in one, two, and three dimensions

Z Lan, MLN Chen, F Gao, S Zhang, EI Wei - Reviews in Physics, 2022‏ - Elsevier
Topological photonics has attracted increasing attention in recent years due to the unique
opportunities it provides to manipulate light in a robust way immune to disorder and defects …

Higher-order topological polariton corner state lasing

J Wu, S Ghosh, Y Gan, Y Shi, S Mandal, H Sun… - Science …, 2023‏ - science.org
Unlike conventional laser, the topological laser is able to emit coherent light robustly against
disorders and defects because of its nontrivial band topology. As a promising platform for …